johnson232:

What they have in lagos is best classified as soft sand & not sharp sand.

adanny01:


I know you disagree, these things are not always what they seem. It is like getting an online diagnosis for certain symptoms but nothing beats physical examination by an experienced Doctor.

Porosity is the reason sharp sand looks like it doesnt expand but infact it is most affected by water than laterite. I did permeability tests on laterite that made me sleep in the lab during my UG project. Like i said with the modification, you need to do proper compaction on the laterite and it beats sand any day any time.

Have you ever seen sand on road construction? In fact, if you meet a sand deposit on road construction you have to remove it same way you would with clay.

Think of it this way, sand allows water level to rise within it but properly compacted laterite stops water level.Water is the enemy here.

megacontrol:
Hmmm, this is an example of the concern i raised earlier about myth or individual practices being adopted over time as industry standard process/best practice without technical justification, or like in this case scientific research.

Although this is argument is difficult to accept as it completely turns everything on its head, but who are we to belittle your body of work. I actually would love to read excerpts of the report if you don't mind sharing with me privately.

I understand geology in general so i get your point on porosity and permeability.

Just to be sure,which sand do you refer to as sharp and laterite in this case?

Barryton:

Are u suggesting laterite is more suitable for filling in waterlogged areas?

adanny01:


Exactly.

However, if not done properly, it would lead to a disaster where the sand would have been a better option.

That is why there is no cheaper substitute for the sub base material for road construction other than laterite. It is also the cause of most road failures in Nigeria and beyond when not done properly.

Barryton:

This is why i have always maintained every contributor is important on this thread. That is the only way we can have contrary views & learn.
Thanks for sharing your findings, so many renowned engineers in this thread have always opined that laterite is a no go area for filling in water logged areas, i just hope they will come out to counter this your position so we can learn. But i still have my reservations, because my little experience with laterite shows it doesn't go well with water. How to make it compact properly in a waterlogged area is what i still don't get.

adanny01:


I know you disagree, these things are not always what they seem. It is like getting an online diagnosis for certain symptoms but nothing beats physical examination by an experienced Doctor.

Porosity is the reason sharp sand looks like it doesnt expand but infact it is most affected by water than laterite. I did permeability tests on laterite that made me sleep in the lab during my UG project. Like i said with the modification, you need to do proper compaction on the laterite and it beats sand any day any time.

Have you ever seen sand on road construction? In fact, if you meet a sand deposit on road construction you have to remove it same way you would with clay.

Think of it this way, sand allows water level to rise within it but properly compacted laterite stops water level.Water is the enemy here.

adanny01:


The challenge with laterite is controlling its moisture content. So if you are filling land that is permanently flooded, then Laterite will never work since you cant control the water content before compaction

spyder880:


I was there during the construction of the East-West road. But not disagreeing with some of your other points which are similar to the submission I made earlier on the matter.

adanny01:


With regards to the question, sharp sand or just sand and laterite are very different in terms of their definition and their engineering properties. Laterite should not be referred to as sand but may be suitably called soil.

The major engineering difference is in the particle size distribution with laterite having a broad distribution or particle size from clay through silt to sand while sand is generally size distribution that is coarser than silt but finer than gravel. Difference between sand and sharp sand has to do with shape of the particle rather than size with the latter being more specific to the shape.

The second engineering difference is the chemical composition which is derived from rocks it was formed from. Laterite has majorly iron and aluminum while sand is silicon and calcium.

Every definition of laterite must contain the word reddish and clayey because of its particle size which contains more clay and silt than sand.

Barryton:

Okay clear now.
Sharp sand is still better for filling waterlogged land, because of inability to control laterite water content before compaction?

kopell:
Interesting loving it, this is the reason I throw the question to professional in the house. For the other guy that was asking for explanation in private, pls let make every opinion or explanation public in other to give many that may have similar questions opportunities to learn. Thanks you guys for taking time out to explain.

bixton:


You will have to find out the price in your area but in my area its a bag at #700.
Types of aggregate material determines the mix and preferred number.

On a general note (foundation stage/ sub-structure))
6" blocks(solid/hollow)------------30/35 blocks
9" blocks (solid/hollow)----------20/25 blocks


You can increase the number by +5 afterwards for after foundation stage.

Barryton:

Are u suggesting laterite is more suitable for filling in waterlogged areas?

skelefish:
Hello house You guys are doing great work here, kudos to all members. Pls how many 6inches block can i get from a 10tons trip of sand? I will gladly appreciate your response.

Dominionng:


You did a full wall tiles before POP ceiling and your installer didn't crack the tiles before he installed the ceiling? i.e the ceiling was tied to the noggin alone without the wall? Kindly keep his contact for you will need him for repairs. This is not a drill sir.

rotecch77:
The tiles is called Carrara white,
Spanish price range for 60x60 real porcelain 5000-6000
Nigeria version 40x40 size N1600

Chekitaut:
700

GoodFaith:

why will any reasonable person want to install tiles before POP it is not logical
I will install my kitchen wall cabinet before I install my tiles
But the floor tiles will be done before I install cabinet on the ground

aonag:
I would like to ask a question.. this goes to those fixing POP in their houses. does the whole POP come before fixing tiles, if so, how do you start fixing tiles on the wall where the POP connects as in my understanding, it may be a bit of a not so clean job when you have the edges of the wall tiles pop out because it doesnt lap well with the POP.. How does that work can someone explain to me?

skelefish:

Thank u very much sir!!!
U have any about that for 9inches & 6inches solid per 10tons?
Thanks alot Chekitaut, i really appreciate.

skelefish:

It is measurement, same way they measure tiles to lap with pvc or ceiling board.

Chekitaut:
A complete 10tons will produce 9" 500blocks & 6" 700blocks

aonag:

so basically its measured and then pop is fixed and comes wall tiles right?

skelefish:
Does it produce same number of blocks for 6inches solid & hollow? Thanks alot.